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Enrichment Circuit Well size

Discussion in 'XJ Technical Chat' started by redcorfe, Jun 23, 2008.

  1. redcorfe

    redcorfe Member

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    Hi,

    Does anyone know or can confirm the size of the small diameter below the start jet ?

    If Gamuru picture is scaled up it is about 0.80mm / 31 thou but has anyone actually measured it ?

    I have 3 of these blocked and I thought I would try the drill method first before trying the other mentioned on his thread.

    -----------------------------------
    1981 UK XJ650 ( nearly there )
    Back to biking after a long time :lol:
     
    redcorfe, Jun 23, 2008
    #1
  2. Kiwi

    Kiwi Member

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    I have an XJ750RL Suppliment to XJ900 Manual (my bike's an XJ750E-II which is close to the RL and has the Hitachi carbs). Any way in the specs for the Carbs it lists the Starter Jet as a #43. This I believe is 0.43 mm. I have checked with .015 inch lockwire which is .38 mm and it passes thru cleanly and with the wire from a brush (measured at .4 mm) it passed thru but was a tight fit so I believe the #43 to be correct.

    Hope this helps.
     
    Kiwi, Jun 24, 2008
    #2
  3. redcorfe

    redcorfe Member

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    Cheers Kiwi - man that's small !

    I have tried boiling the bowls to try and shift the block but still jammed.

    Will try a small 0.3m drill by hand ( v gently )
     
    redcorfe, Jun 25, 2008
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  4. redcorfe

    redcorfe Member

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    Just an update - held the 0.3mm drill in a split pin, twisted a few times and BINGO ! :lol: :lol:

    Carbs back on the bike tonight to see if the starting has improved.



    -----------------------------------
    1981 UK XJ650 ( nearly there )
    Back to biking after a long time Laughing
     
    redcorfe, Jun 25, 2008
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